Drug profile

The FDA adverse-event record for Cloprostenol

17 adverse-event reports submitted to the FDA Center for Veterinary Medicine reference Cloprostenol. See the species affected, top reactions, and outcomes below.

17
adverse-event reports
35.3%
death-coded share
Cattle
most-reported species
5
Death - top reaction
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Important: Adverse event reports do not establish that a drug caused or contributed to the event. Consult your veterinarian before making treatment decisions.
17
Total Reports
6
Deaths Reported
35.3%
Death Rate

Active Ingredients

Cloprostenol

Administration Routes

UnknownIntramuscularSubcutaneous

Species Affected

Cattle 10
Unknown 6
Monkey 1

Most Affected Breeds

Unknown 7
Cattle (other) 6
Aberdeen Angus 3
Holstein-Friesian also known as Holstein 1

Most Reported Reactions

Death 5
Lack of efficacy - NOS 5
Contamination, Particulate Matter 2
Hyperextension 2
INEFFECTIVE, ESTRUS INDUCTION 2
Vials, Damaged 2
Containers, Damaged 1
Seal, Abnormal 1
Eyes rolling back 1
Collapse NOS (see also 'Cardio-vascular' and 'Neurological disorders') 1
Underdose 1
INEFFECTIVE, ESTRUS SYNCHRONIZ 1

Outcome Breakdown

Outcome Unknown
6 (35.3%)
Died
5 (29.4%)
Recovered/Normal
4 (23.5%)
Recovered with Sequela
1 (5.9%)
Euthanized
1 (5.9%)

Cloprostenol Adverse Event Insights

17 reports name Cloprostenol; 6 recorded a death outcome (35.3% of reported events, not a population-level mortality rate). Active ingredient: Cloprostenol. Administration routes: Unknown, Intramuscular, Subcutaneous.

By species: Cattle (10 reports), Unknown (6 reports), Monkey (1 reports). By breed: Unknown (7), Cattle (other) (6), Aberdeen Angus (3).

Leading clinical signs: Death (5), Lack of efficacy - NOS (5), Contamination, Particulate Matter (2), Hyperextension (2). Outcome, 17 coded reports: Outcome Unknown leads at 35.3%.

Read these counts as reporting volume, not risk: per our methodology, a widely-prescribed drug will rack up more raw FDA reports in a given year than a rarely-used one at an identical true rate, so we recommend comparing within similar-exposure products rather than across the full 2025 catalog.

Source: FDA Center for Veterinary Medicine openFDA Animal & Veterinary Adverse Events (CVM AER) · 2025

Every figure on PlainBreed is rendered directly from FDA openFDA adverse event data, no number is typed in by an editor. This page draws directly on FDA openFDA data, no figure is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error.